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Showing 1 to 8 of 8 for “"Transverse dispersion"”.
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A Pore Scale Study of Substrate Mixing and Biological Degradation in Porous Media
… rates are consistently underpredicted when transverse dispersion coefficients obtained from nonreactive transport simulations are used for reactive transport. The continuum model with values of transverse dispersion fitted to the reactive case is able to match downstream degradation rates …
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Analysis of Solute Mixing at the Pore-Scale Using Micromodels and Lattice -Boltzmann Finite Volume Modeling
Transverse mixing has been shown to often be the controlling mechanisms for degradation of contaminants in groundwater. For a conservative contaminant, downgradient concentrations depend on initial source zone concentrations and the extent to which the contaminant mixes (i.e., dilutes) with …
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The Development and Application of Reactive Transport Modeling Techniques to Study Radionuclide Migration at Yucca Mountain, Nevada
… coupling approach applied to the convection-dispersion-reaction (CDR) model and (2) a reactive streamtube approach (RST). These models were designed to capture the important processes that influence radionuclide migration while being computationally efficient. The conventional method of …
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Simulation of viscous fingering during miscible displacement in nonuniform porous media
… the aspect ratio (ratio of longitudinal to transverse dimension), Peclet numbers for molecular, longitudinal and transverse dispersion and the gravity number. To study the effect of the structure of the porous medium, simulations are performed on different random permeability fields, …
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The Application of Nuclear Magnetic Resonance Towards Understanding Chromatographic Separations of Proteins
… transport parameters such as apparent axial and transverse dispersion coefficients. In addition, the impact of protein adsorption to the stationary phase on in-column transport of the mobile phase was studied, as was the effect of subsequent column sanitisation.
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LONGITUDINAL SOLUTE TRANSPORT IN OPEN-CHANNEL FLOW - A Numerical Simulation Study on Longitudinal Dispersion, Surface Storage Effects, Transverse Mixing, Uncertainties and Parameter-Transferring Problems
… is a significant improvement over the advection-dispersion model (ADM), but it cannot simulate the breakthrough curve (BTC) immediately after a large pool. Additionally, the calibration (parameterization) method is challenged by the non-identifiability which is common to all inverse modeling, and …
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Hydrogeology of the Hillsboro landfill, Hillsboro, North Dakota
… believed to be the result of longitudinal and transverse dispersion within the saturated zone. These plumes indicate that the buried refuse within landfill trenches is the source of contamination. However, the plume shapes for lead and arsenic probably reflect isolated disposal or surface …
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Modeling single-phase flow and solute transport across scales
… within pores (large void volumes), and b) shear dispersion within throats (narrow constrictions connecting the pores), which are shown to have a substantial impact on transverse and longitudinal dispersion coefficients at the macro scale. The models are verified with high-resolution pore-scale …